export default function randomString(num) {  
    const e = num || 32;
    const t = "ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678";
    const a = t.length;
    let n = "";
    for (let i = 0; i < e; i++) n += t.charAt(Math.floor(Math.random() * a));
    return n
}